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Finding the Fourth Proportional to 378,045.20, 567,067.80 and 141,338.90

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Solution

The fourth proportional to 378,045.20, 567,067.80 and 141,338.90 is: 212,008.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,045.20 : 567,067.80 = 141,338.90 : x
  2. Step 2: Convert to fraction form
    378,045.20/567,067.80 = 141,338.90/x
  3. Step 3: Cross multiply
    378,045.20x = 567,067.80 × 141,338.90
  4. Step 4: Simplify right side
    378,045.20x = 80,148,739,077.42
  5. Step 5: Solve for x
    x = 80,148,739,077.42/378,045.20
  6. Step 6: Final answer
    x = 212,008.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.